MartechGuru - Keep track of your marketing technology SaaS contracts easily. No more spreadsheets.
TopStartups.io - Backed by investors like Sequoia, A16Z, Benchmark. See the fastest growing startups in one place.
The Angel Philosopher - A compilation of Naval's wisdom, knowledge and thoughts.
Gemoo Snap - A free "Swiss Army Knife" of screenshot tasks for startups.
CabinetM - Pinterest for marketing tools: find, compare and build stack
Startup 101 - TL/DR: Curated startup lessons for entrepreneurs who are looking to start a company as well as those in the process of building one.